How many structurally different binary trees can be formed with 3 nodes?
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Correct answer: (D) 5
Explanation
Catalan number C3 = 5.
From DSSSB TGT Computer Science Full Mock Test 5
This is question 146 of DSSSB TGT Computer Science Full Mock Test 5. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.